Faculty member Sharon Rose, alumnus Michael Obiri-Yeboah (PhD 2021, currently Assistant Teaching Professor in Linguistics Department at Georgetown University) and Sarah C. Creel (faculty member in UC San Diego Cognitive Science)  just published the paper “Perception of ATR contrasts by Akan speakers: a case of perceptual near-merger.” in Laboratory Phonology. The paper shows how Akan speakers can easily distinguish vowels contrasted by only Advanced Tongue Root, but have difficulty perceiving phonemic vowel contrasts that differ by both Advanced Tongue Root and height features; although such vowels have distinct articulation, they are acoustically similar.